no code implementations • 7 Oct 2023 • Kento Tomita, Yuri Shimane, Koki Ho
This paper exploits the EIF's additive structure of measurement information to break the dependence and devises an efficient linear integer programming formulation.
no code implementations • 21 Feb 2023 • Yuri Shimane, Nick Gollins, Koki Ho
This work proposes an adaptation of the Facility Location Problem for the optimal placement of on-orbit servicing depots for satellite constellations in high-altitude orbit.
1 code implementation • 30 Jan 2023 • Travis Driver, Kento Tomita, Koki Ho, Panagiotis Tsiotras
Hazard detection and avoidance is a key technology for future robotic small body sample return and lander missions.
no code implementations • 16 Mar 2021 • Yuji Takubo, Hao Chen, Koki Ho
This paper develops a hierarchical reinforcement learning architecture for multimission spaceflight campaign design under uncertainty, including vehicle design, infrastructure deployment planning, and space transportation scheduling.
Hierarchical Reinforcement Learning reinforcement-learning +2
no code implementations • 24 Feb 2021 • Keidai Iiyama, Kento Tomita, Bhavi A. Jagatia, Tatsuwaki Nakagawa, Koki Ho
This research proposes a new integrated framework for identifying safe landing locations and planning in-flight divert maneuvers.
no code implementations • 21 Feb 2021 • Kento Tomita, Katherine A. Skinner, Koki Ho
However, performance for these methods can degrade for input DEMs with increased sensor noise.